Bicchittu (gender unknown)
(with) definite article: ?tube through which the bag of a mouth-blown bagpipe, &c. is inflated
Term used by Enrico Musichini.
Di Silvestre, Carlo: La zampogna zoppa in Abruzzo. In: La zampogna: gli aerofoni a sacco in Italia (2005), I, p.159.